Fourier-transform infrared investigation of intermediates in the oxidation of toluene on V2O5/TiO2
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 84 (7) , 2465-2475
- https://doi.org/10.1039/f19888402465
Abstract
The adsorption and oxidation of toluene on V–Ti oxide prepared by the gas-phase method (2.1 to 5.6 wt%) has been studied by F.t.i.r. spectroscopy as well as the microcatalytic method. It is found that toluene is bonded as a π-complex to the vanadium ion. The CH3 groups of the π-complex are dehydrogenated by the VO species to form benzyl species at room temperature. The formation of aldehyde-like intermediate before the oxidation of benzyl species to benzoate has been confirmed. The reactivity of surface VO species of V–Ti oxide prepared by a gas-phase method is greater than that of the impregnation catalyst.Keywords
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